convert circleci workflows to github actions

[robandpdx]

Summary

This pull request converts the CircleCI workflows to GitHub actions workflows.

Errors

The linux job fails with the following unit test failure...

Error

-- Testing: 1976 tests, 4 threads --
Testing: 0 .. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 
FAIL: Hermes-Unit :: VMRuntime/./HermesVMRuntimeTests/GCReturnUnusedMemoryTest.CollectReturnsFreeMemory (1808 of 1976)
******************** TEST 'Hermes-Unit :: VMRuntime/./HermesVMRuntimeTests/GCReturnUnusedMemoryTest.CollectReturnsFreeMemory' FAILED ********************
Note: Google Test filter = GCReturnUnusedMemoryTest.CollectReturnsFreeMemory
[==========] Running 1 test from 1 test case.
[----------] Global test environment set-up.
[----------] 1 test from GCReturnUnusedMemoryTest
[ RUN      ] GCReturnUnusedMemoryTest.CollectReturnsFreeMemory
/home/runner/work/hermes/hermes/hermes/unittests/VMRuntime/GCReturnUnusedMemoryTest.cpp:68: Failure
Expected: (*before) < (*touched), actual: 3009 vs 3009
[  FAILED  ] GCReturnUnusedMemoryTest.CollectReturnsFreeMemory (5 ms)
[----------] 1 test from GCReturnUnusedMemoryTest (5 ms total)

[----------] Global test environment tear-down
[==========] 1 test from 1 test case ran. (5 ms total)
[  PASSED  ] 0 tests.
[  FAILED  ] 1 test, listed below:
[  FAILED  ] GCReturnUnusedMemoryTest.CollectReturnsFreeMemory

 1 FAILED TEST

********************
Testing: 0 .. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90.. 
Testing Time: 13.21s
********************
Failing Tests (1):
    Hermes-Unit :: VMRuntime/./HermesVMRuntimeTests/GCReturnUnusedMemoryTest.CollectReturnsFreeMemory

  Expected Passes    : 1848
  Unsupported Tests  : 127
  Unexpected Failures: 1

Test Plan

The workflows was tested in my fork. Here is the latest workflow run in my fork.

https://fburl.com/workplace/f6mz6tmw

[github-actions[bot]]

Pull Request Test Coverage Report for Build 8118422640

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 52.349%

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Totals
Change from base Build 8118412857:	0.0%
Covered Lines:	8273
Relevant Lines:	14874

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💛 - Coveralls